“This is my first review for a product so I maybe lacking details in some areas or using the wrong terms. Forgive me for that. I did buy these in Japan at a department store called Joshin so I don't have the technical details but you can find them here http://www.audio-technica.co.jp/atj/show_model.php?modelId=2305. In terms of USD I think I payed roughly $65 and they were definitely worth...” --purpledrank

“I bought this Cks990 through Aliexpress for 32USD.Official Amazon price at USD130++. Has been using it extensively for last 3 weeks with total burn in period of over 100 hours. Are they original Audio-technica product. I don't know. I does look and feel like an expensive earphone. Does it sound good? no. Because it sounds excellent . I only have one brand new in box {BNIB} Audio-technica...” --AzimAkbar

“Design:
The IM-04 is quiet bulky, but it is rounded off in the inner side, and with the short nozzles I have found no fitting issues whatsoever. The body is shinny with pitch black color, and a gold logo of Audio Technica. The shells are made of hard plastic, and of what kind of quality and durability is up to guesses, but I will have to go with "Japan made" and say...” --Whitigir

“Written originally in http://www.head-fi.org/t/738635/new-audio-technica-iems-ckr7ltd-ckr9ltd-ckb50-ckb70/30 thread on 4th September 2015.
Silly me because I just found out how to add new item for review, discussion purpose.
I bought the CKB50 through Aliexpress for just 26USD, free shipping. They described it as original CKB50 and even...” --AzimAkbar

“
CK7 earphone is a nice detailed ear piece with titanium housing which makes it very durable. For me, although i am not using it very often this works the same as it used to be the first day i bought it. They require burn in time at least 100 hours and you can definitely tell the difference in the bass section and the mids.
Comfort: i would recommend to be worn...” --FarCry

“Background:
The Audio-Technica CK10 is a dual BA IEM that was released in 2008, back then in those simpler times, CIEMs were a highly niche market, three BA drivers per ear was considered a lot, and $500 on a pair of IEMs would be considered preposterous. The market that the CK10 faced then is a completely different world from IEMs today, and given the last review for these here was done...” --mrstrangeguy

“
Anyone looking for a highly balanced, highly detailed sound look no further. The CK90 pro is a great IEM and is unfortunate it doesn't receive as much recognition as it should.
The best part of it's smooth sound, is it's lush mids; on par with great mid names such as Sennheiser and Shure. The bass is good for an armature driver. It has great presence and impact, but it lacks the...” --bisayaboi